Created pal_consts.h. New exported functions are now prefixed with "snmalloc_".

src/mem/allocconfig.h

@@ -4,40 +4,6 @@
 
 namespace snmalloc
 {
-  void error(const char* const str);
-
-  /**
-   * Flags in a bitfield of optional features that a PAL may support.  These
-   * should be set in the PAL's `pal_features` static constexpr field.
-   */
-  enum PalFeatures : uint64_t
-  {
-    /**
-     * This PAL supports low memory notifications.  It must implement a
-     * `low_memory_epoch` method that returns a `uint64_t` of the number of
-     * times that a low-memory notification has been raised and an
-     * `expensive_low_memory_check()` method that returns a `bool` indicating
-     * whether low memory conditions are still in effect.
-     */
-    LowMemoryNotification = (1 << 0),
-    /**
-     * This PAL natively supports allocation with a guaranteed alignment.  If
-     * this is not supported, then we will over-allocate and round the
-     * allocation.
-     *
-     * A PAL that does supports this must expose a `request()` method that takes
-     * a size and alignment.  A PAL that does *not* support it must expose a
-     * `request()` method that takes only a size.
-     */
-    AlignedAllocation = (1 << 1)
-  };
-
-  enum ZeroMem
-  {
-    NoZero,
-    YesZero
-  };
-
   // 0 intermediate bits results in power of 2 small allocs. 1 intermediate
   // bit gives additional sizeclasses at the midpoint between each power of 2.
   // 2 intermediate bits gives 3 intermediate sizeclasses, etc.

src/override/malloc.cc

@@ -205,16 +205,20 @@ extern "C"
     return ENOENT;
   }
 
-  SNMALLOC_EXPORT void* SNMALLOC_NAME_MANGLE(get_global_pagemap)(void)
+#ifdef SNMALLOC_EXPOSE_PAGEMAP
+  SNMALLOC_EXPORT void* SNMALLOC_NAME_MANGLE(snmalloc_get_global_pagemap)(void)
   {
     return &snmalloc::global_pagemap;
   }
+#endif
 
+#ifdef SNMALLOC_EXPOSE_RESERVE
   SNMALLOC_EXPORT void*
-    SNMALLOC_NAME_MANGLE(reserve_shared)(size_t* size, size_t align)
+    SNMALLOC_NAME_MANGLE(snmalloc_reserve_shared)(size_t* size, size_t align)
   {
     return snmalloc::default_memory_provider.reserve<true>(size, align);
   }
+#endif
 
 #if !defined(__PIC__) && !defined(NO_BOOTSTRAP_ALLOCATOR)
   // The following functions are required to work before TLS is set up, in

src/pal/pal.h

@@ -1,5 +1,12 @@
 #pragma once
 
+#include "pal_consts.h"
+
+namespace snmalloc
+{
+  void error(const char* const str);
+}
+
 // If simultating OE, then we need the underlying platform
 #if !defined(OPEN_ENCLAVE) || defined(OPEN_ENCLAVE_SIMULATION)
 #  include "pal_apple.h"

src/pal/pal_consts.h

@@ -0,0 +1,34 @@
+namespace snmalloc
+{
+  /**
+   * Flags in a bitfield of optional features that a PAL may support.  These
+   * should be set in the PAL's `pal_features` static constexpr field.
+   */
+  enum PalFeatures : uint64_t
+  {
+    /**
+     * This PAL supports low memory notifications.  It must implement a
+     * `low_memory_epoch` method that returns a `uint64_t` of the number of
+     * times that a low-memory notification has been raised and an
+     * `expensive_low_memory_check()` method that returns a `bool` indicating
+     * whether low memory conditions are still in effect.
+     */
+    LowMemoryNotification = (1 << 0),
+    /**
+     * This PAL natively supports allocation with a guaranteed alignment.  If
+     * this is not supported, then we will over-allocate and round the
+     * allocation.
+     *
+     * A PAL that does supports this must expose a `request()` method that takes
+     * a size and alignment.  A PAL that does *not* support it must expose a
+     * `request()` method that takes only a size.
+     */
+    AlignedAllocation = (1 << 1)
+  };
+
+  enum ZeroMem
+  {
+    NoZero,
+    YesZero
+  };
+}